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- r0: run_1_thread
- r1: run_2_threads
- r2: run_4_threads
- r3: run_8_threads
- r4: run_16_threads
- r5: run_26_threads
Metric | r0 | r1 | r2 | r3 | r4 | r5 |
---|
Total Time (s) | 193.06 | 102.05 | 56.56 | 33.82 | 22.45 | 18.10 |
Max (Thread Active Time) (s) | 192.56 | 101.78 | 56.39 | 33.71 | 22.36 | 18.00 |
Average Active Time (s) | 192.56 | 98.66 | 51.72 | 28.26 | 16.52 | 12.01 |
Activity Ratio (%) | 99.7 | 96.7 | 91.5 | 83.6 | 73.7 | 66.4 |
Average number of active threads | 0.997 | 1.934 | 3.658 | 6.685 | 11.775 | 17.247 |
Affinity Stability (%) | 100.0 | 99.9 | 99.6 | 99.3 | 98.9 | 98.5 |
GFLOPS | 3.263 | 6.174 | 11.139 | 18.629 | 28.055 | 34.794 |
Time in analyzed loops (%) | 100.0 | 97.6 | 93.1 | 85.2 | 72.8 | 61.7 |
Time in analyzed innermost loops (%) | 97.5 | 95.0 | 90.8 | 83.0 | 71.0 | 60.2 |
Time in user code (%) | 100.0 | 97.6 | 93.0 | 85.2 | 72.8 | 61.7 |
Compilation Options Score (%) | 16.7 | 16.7 | 16.7 | 16.7 | 16.7 | 16.7 |
Array Access Efficiency (%) | 96.1 | 96.1 | 96.2 | 96.1 | 96.2 | 96.2 |
|
Potential Speedups |  |
Perfect Flow Complexity | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Perfect OpenMP + MPI + Pthread | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Perfect OpenMP + MPI + Pthread + Perfect Load Distribution | 1.00 | 1.06 | 1.17 | 1.40 | 1.86 | 2.43 |
Scalability - Gap | 1.00 | 1.06 | 1.17 | 1.40 | 1.86 | 2.44 |
No Scalar Integer | Potential Speedup | 1.26 | 1.25 | 1.23 | 1.21 | 1.17 | 1.14 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
FP Vectorised | Potential Speedup | 2.33 | 2.26 | 2.14 | 1.95 | 1.71 | 1.54 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 |
Fully Vectorised | Potential Speedup | 9.97 | 8.19 | 6.14 | 4.28 | 2.90 | 2.25 |
Nb Loops to get 80% | 3 | 2 | 2 | 2 | 2 | 1 |
Only FP Arithmetic | Potential Speedup | 1.37 | 1.36 | 1.33 | 1.30 | 1.24 | 1.20 |
Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 |
Source Object | Issue |
▼kmeans-clang-O3-funroll– | |
▼main.cpp– | |
○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
○ | -O2, -O3 or -Ofast is missing. |
○ | -march=(target) is missing. |
Source Object | Issue |
▼kmeans-clang-O3-funroll– | |
▼main.cpp– | |
○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
○ | -O2, -O3 or -Ofast is missing. |
○ | -march=(target) is missing. |
Source Object | Issue |
▼kmeans-clang-O3-funroll– | |
▼main.cpp– | |
○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
○ | -O2, -O3 or -Ofast is missing. |
○ | -march=(target) is missing. |
Source Object | Issue |
▼kmeans-clang-O3-funroll– | |
▼main.cpp– | |
○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
○ | -O2, -O3 or -Ofast is missing. |
○ | -march=(target) is missing. |
Source Object | Issue |
▼kmeans-clang-O3-funroll– | |
▼main.cpp– | |
○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
○ | -O2, -O3 or -Ofast is missing. |
○ | -march=(target) is missing. |
Source Object | Issue |
▼kmeans-clang-O3-funroll– | |
▼main.cpp– | |
○ | -g is missing for some functions (possibly ones added by the compiler), but debug locations are available. Some analysis may be inaccurate. |
○ | -O2, -O3 or -Ofast is missing. |
○ | -march=(target) is missing. |
| r0 | r1 | r2 | r3 | r4 | r5 |
Experiment Name | K-Means scalability clang-O3-funroll 100000000 | K-Means scalability clang-O3-funroll 100000000 | K-Means scalability clang-O3-funroll 100000000 | K-Means scalability clang-O3-funroll 100000000 | K-Means scalability clang-O3-funroll 100000000 | K-Means scalability clang-O3-funroll 100000000 |
Application | ./kmeans/kmeans-clang-O3-funroll | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Timestamp | 2025-06-27 16:22:25 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Experiment Type | Sequential | OpenMP; | same as r1 | same as r1 | same as r1 | same as r1 |
Machine | skylake | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Architecture | x86_64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Micro Architecture | SKYLAKE | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Model Name | Intel(R) Xeon(R) Platinum 8170 CPU @ 2.10GHz | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Cache Size | 36608 KB | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of Cores | 26 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Maximal Frequency | 2.1 GHz | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
OS Version | Linux 6.10.10-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 12 Sep 2024 17:21:02 +0000 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Architecture used during static analysis | x86_64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Micro Architecture used during static analysis | SKYLAKE | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Compilation Options |
kmeans-clang-O3-funroll: clang version 20.1.6 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of processes observed | 1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of threads observed | 1 | 2 | 4 | 8 | 16 | 26 |
Frequency Driver | intel_cpufreq | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Frequency Governor | performance | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Huge Pages | always | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Hyperthreading | off | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of sockets | 2 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of cores per socket | 26 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
MAQAO version | 2025.1.0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
MAQAO build | e913a471001afb562449956a906221b5bfa8ea0d::20250617-163738 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Comments | Intel Xeon Platinum 8170 (Skylake CPU), 1-26 threads runs | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |